diff --git a/libs/common/src/platform/misc/utils.ts b/libs/common/src/platform/misc/utils.ts
index 136b0ac394f..867093ef5be 100644
--- a/libs/common/src/platform/misc/utils.ts
+++ b/libs/common/src/platform/misc/utils.ts
@@ -301,7 +301,7 @@ export class Utils {
   }
 
   static fromUtf8ToUrlB64(utfStr: string): string {
-    return Utils.fromBufferToUrlB64(Utils.fromUtf8ToArray(utfStr));
+    return Utils.fromBufferToUrlB64(Utils.fromUtf8ToArray(utfStr).buffer as ArrayBuffer);
   }
 
   static fromB64ToUtf8(b64Str: string): string {